Feud : a prolonged and bitter quarrel or dispute.Friendship : the emotions or conduct of friends; the state of being friends.Mortal : (of a living human being, often in contrast to a divine being) subject to death.Threat : a person or thing likely to cause damage or danger.Vendetta : a blood feud in which the family of a murdered person seeks vengeance on the murderer or the murderer's family.Synonym of Vendetta is Feud